b12 injection or supplement Vitamin Sublingual B12 vs. B12 Injections:

PMID 24470095

I hope the NHS Constitution will help you to do this

How Often Should You Get Vitamin Injections

Individuals who have a family history of obesity, might not achieve as great of results as those who dont have such a family history

B12 Injection Services Across North West England Pharmacy clinics such as Hollowood Chemists provide travel health advice and consultations services for residents in St Helens (Garswood, Heatons, Millfields, Haydock and Bradlegh), Wigan (Moorside, Mesnes, Ince and Blackhorse (Blackrod)), Market in Bolton, Trafford including Sale and Village, Northwich in Barnton, Crewe and Clayton in Staffordshire